1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #ifndef SP_TEX_TILE_CACHE_H
29 #define SP_TEX_TILE_CACHE_H
32 #include "pipe/p_compiler.h"
35 struct softpipe_context
;
36 struct softpipe_tex_tile_cache
;
40 * Cache tile size (width and height). This needs to be a power of two.
45 /* If we need to support > 4096, just expand this to be a 64 bit
46 * union, or consider tiling in Z as well.
48 union tex_tile_address
{
50 unsigned x
:6; /* 4096 / TILE_SIZE */
51 unsigned y
:6; /* 4096 / TILE_SIZE */
52 unsigned z
:12; /* 4096 -- z not tiled */
61 struct softpipe_tex_cached_tile
63 union tex_tile_address addr
;
65 float color
[TILE_SIZE
][TILE_SIZE
][4];
69 #define NUM_ENTRIES 50
71 struct softpipe_tex_tile_cache
73 struct pipe_screen
*screen
;
74 struct pipe_transfer
*transfer
;
77 struct pipe_texture
*texture
; /**< if caching a texture */
80 struct softpipe_tex_cached_tile entries
[NUM_ENTRIES
];
82 struct pipe_transfer
*tex_trans
;
84 int tex_face
, tex_level
, tex_z
;
86 struct softpipe_tex_cached_tile
*last_tile
; /**< most recently retrieved tile */
90 extern struct softpipe_tex_tile_cache
*
91 sp_create_tex_tile_cache( struct pipe_screen
*screen
);
94 sp_destroy_tex_tile_cache(struct softpipe_tex_tile_cache
*tc
);
98 sp_tex_tile_cache_map_transfers(struct softpipe_tex_tile_cache
*tc
);
101 sp_tex_tile_cache_unmap_transfers(struct softpipe_tex_tile_cache
*tc
);
104 sp_tex_tile_cache_set_texture(struct softpipe_tex_tile_cache
*tc
,
105 struct pipe_texture
*texture
);
108 sp_tex_tile_cache_validate_texture(struct softpipe_tex_tile_cache
*tc
);
111 sp_flush_tex_tile_cache(struct softpipe_tex_tile_cache
*tc
);
115 extern const struct softpipe_tex_cached_tile
*
116 sp_find_cached_tile_tex(struct softpipe_tex_tile_cache
*tc
,
117 union tex_tile_address addr
);
119 static INLINE
union tex_tile_address
120 tex_tile_address( unsigned x
,
126 union tex_tile_address addr
;
129 addr
.bits
.x
= x
/ TILE_SIZE
;
130 addr
.bits
.y
= y
/ TILE_SIZE
;
132 addr
.bits
.face
= face
;
133 addr
.bits
.level
= level
;
138 /* Quickly retrieve tile if it matches last lookup.
140 static INLINE
const struct softpipe_tex_cached_tile
*
141 sp_get_cached_tile_tex(struct softpipe_tex_tile_cache
*tc
,
142 union tex_tile_address addr
)
144 if (tc
->last_tile
->addr
.value
== addr
.value
)
145 return tc
->last_tile
;
147 return sp_find_cached_tile_tex( tc
, addr
);
154 #endif /* SP_TEX_TILE_CACHE_H */